Logical Reasoning Test Practice: Deductive and Inductive Questions
A logical reasoning test checks whether you can follow a rule to its conclusion using only the information given. Deductive questions give premises and ask what must be true, conditional questions test if-then statements, and inductive questions ask you to spot the rule in a sequence. The main trap is importing outside assumptions instead of reasoning from the stated premises.
A logical reasoning test measures whether you can apply a stated rule correctly, not what you already know about the world. It typically covers three item types: deductive syllogisms, where you're given premises and asked what must logically follow; conditional or if-then statements, where you reason about what a rule implies or doesn't imply; and inductive sequences, where you spot a pattern in a series of numbers, letters or shapes and extend it.
The format looks simple on the page, which is exactly what makes it tricky under time pressure. Most wrong answers don't come from failing to understand a rule, they come from unconsciously adding information the question never stated: assuming a converse relationship holds, assuming a category is exclusive when it wasn't said to be, or letting real-world plausibility override what the premises actually say.
Because the questions are self-contained, the skill transfers well with practice. Learning to notice the specific traps: the converse error, the affirming-the-consequent error, and the all-versus-some distinction, does more for your score than any amount of general puzzle-solving practice.
The format at a glance
- Format
- Multiple choice, based on short logic statements, conditional rules, or a sequence of numbers, letters or shapes
- Question types
- Deductive syllogisms, conditional (if-then) reasoning, and inductive sequence or pattern items
- Time pressure
- Tightly timed on a per-question basis, though the exact limit varies by test provider and employer
- Skill measured
- Whether you can reason strictly from the stated premises without importing outside assumptions or real-world knowledge
- Who uses it
- General aptitude batteries, graduate and analyst hiring, and broader cognitive-ability screening
What it measures
Deductive syllogisms
A syllogism gives you one or two premises and asks what must logically follow. The trap is usually the difference between 'all' and 'some': if all members of a group have a property, anyone in that group must have it, but if only some members do, you cannot conclude anything about a specific individual without more information.
Conditional (if-then) statements
Conditional items test whether you understand what an if-then rule does and does not imply. If the rule holds and the condition is met, the outcome must follow; if the outcome didn't happen, the condition must not have been met either. But if you're only told the outcome happened, you usually cannot conclude the condition caused it, since other things could produce the same outcome.
Inductive sequences
Inductive items show a sequence of numbers, letters or shapes and ask what comes next. This measures pattern recognition: whether you can identify the rule generating the sequence, which is sometimes a single consistent operation and sometimes two rules running in parallel, such as a value that increases while a shape simultaneously rotates.
Reasoning under time pressure
Because each item is short but the traps are subtle, the test also measures whether you can slow down just enough to reason carefully without running out of time. Rushing tends to produce the exact errors, converse mistakes, unwarranted assumptions, that the format is specifically designed to catch.
Practice questions with worked answers
Written by us to mirror the published format. Work each one out before you read the explanation — the method is the part that transfers, the answer is not.
- Q1Deductive syllogism
All the researchers in this lab hold a PhD. Priya is a researcher in this lab. What can you conclude?
- Priya does not hold a PhD
- Priya is the lab director
- Priya holds a PhD
- Cannot say
Correct answer
Priya holds a PhD. The premise states that ALL researchers in the lab hold a PhD, and Priya is stated to be a researcher in the lab. Because the premise is universal, it applies to every researcher in that group without exception, so the conclusion follows directly and validly.
- Q2Deductive syllogism
Some members of the choir play piano. Sam plays piano. What can you conclude about Sam?
- Sam is a member of the choir
- Sam is not a member of the choir
- Sam is the choir's best pianist
- Cannot say
Correct answer
Cannot say. The premise only says SOME choir members play piano, not that all piano players belong to the choir. Sam playing piano does not place him inside a group defined only by 'some of its members share this trait'. This is the classic converse error: treating 'some A are B' as if it meant 'all B are A'.
- Q3Conditional reasoning
Rule: if a machine's pressure gauge reads above 80, the safety valve releases automatically. The safety valve did not release. What must be true?
- The pressure gauge did not read above 80
- The pressure gauge read above 80
- The machine is broken
- Cannot say
Correct answer
The pressure gauge did not read above 80. This is the contrapositive of the rule: if 'above 80' guarantees the valve releases, then the valve NOT releasing guarantees the gauge was not above 80. No other explanation is offered for a non-release, so this is the one conclusion the stated rule actually supports.
- Q4Conditional reasoning
Rule: if a project runs over budget, the finance team flags it for review. This project has been flagged for review. What can you conclude?
- The project is definitely over budget
- Cannot say whether the project is over budget
- The project is definitely not over budget
- The finance team made an error
Correct answer
Cannot say whether the project is over budget. The rule only states that over-budget projects get flagged, not that flagging only ever happens for that reason. Being flagged is consistent with being over budget, but the rule as given doesn't rule out other reasons for a flag, so you cannot conclude the project is over budget from this alone. This is the affirming-the-consequent trap.
- Q5Inductive sequence
Look at this sequence: 3, 6, 11, 18, 27, ... What is the next number in the sequence?
- 36
- 34
- 38
- 40
Correct answer
38. Look at the differences between consecutive terms: 6-3=3, 11-6=5, 18-11=7, 27-18=9. The differences themselves form a pattern, increasing by 2 each time (3, 5, 7, 9), so the next difference is 11. Adding that to 27 gives 27 + 11 = 38.
How scores are read
Below average
More errors than most candidates on the same test, often from a specific recurring trap such as the converse error rather than a general difficulty with logic. Usually the fastest area to improve with targeted practice.
Average
In line with most candidates who sat the same test. Where many employers set their internal cut-off, though the exact bar is rarely published.
Above average
Consistently correct across syllogisms, conditionals and sequences, with fewer errors on the classic traps and a faster read of what a rule does and doesn't imply.
A note on cut-offs
Published pass marks vary by employer, provider and role, and most are never made public. There is no single percentage score that counts as 'passing' a logical reasoning test in general.
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How to prepare
Use only the premises stated in the question
If a conclusion feels true because it matches how the real world usually works, treat that as a warning sign rather than confirmation. The test wants to know if you can reason from exactly what's written, not from general knowledge, so re-read the premises before committing to an answer.
Draw a quick diagram for syllogisms
A simple circle or box for each group, with an arrow or overlap showing the stated relationship, catches converse errors that are easy to miss when you try to hold the logic in your head. This takes a few seconds and prevents the single most common mistake in this format.
Pin down 'all', 'some' and 'no' before anything else
These three words change what a premise actually allows you to conclude, and test-writers rely on candidates skimming past them. Read the quantifier first, decide what it does and doesn't guarantee, and only then look at the specific case in the question.
Watch for the converse trap in conditional statements
If a rule says A leads to B, knowing that B happened does not tell you A happened, unless the question also states B only ever happens because of A. Practise spotting this specific pattern until it becomes automatic rather than something you have to reason through each time.
Practise sequences and syllogisms separately
They use different mental habits: sequences reward spotting a numeric or visual pattern quickly, while syllogisms reward careful, literal reading of a stated rule. Mixing them in early practice can mask which one you're actually weaker at, so drill them apart before combining.
Don't dwell on one question
If a rule isn't clicking within your allotted time, take your best-supported guess and move on rather than re-reading it five more times. A logical reasoning test rewards steady accuracy across the full set more than perfection on any single hard item.
Time-box your practice sessions the same way as the real test
Practising without a clock builds understanding but not the specific skill of reasoning correctly under pressure, which is what actually gets measured. Once you're comfortable with the logic itself, switch every practice set to timed conditions.
Deductive questions give you premises and ask what must logically follow from them, with one guaranteed correct conclusion. Inductive questions show a sequence and ask you to spot the underlying pattern, which is closer to recognising a rule than proving a certainty.
Importing an assumption the question never stated, most often the converse error: treating 'if A then B' as if it also meant 'if B then A'. Reasoning strictly from the given premises, rather than what seems plausible, avoids most of these mistakes.
No, they're deliberately designed to be answerable from the stated premises alone, sometimes using deliberately unfamiliar or abstract scenarios so real-world knowledge can't help or hurt you. Answering based on outside assumptions is one of the main ways candidates lose marks.
Verbal reasoning asks whether a statement is supported by a passage of text. Logical reasoning asks what necessarily follows from a stated rule or set of premises, and often uses numbers, letters or shapes instead of a written passage.
Yes, more than most people expect, because a large share of errors come from a small number of recurring traps. Learning to recognise those traps, rather than getting generally 'smarter', is what produces most of the improvement in a short practice window.
It's a question built around an if-then rule, asking what can or cannot be concluded from a piece of additional information. The correct reasoning usually relies on the contrapositive of the rule, and the main trap is assuming the reverse direction also holds.
Enough to read the premises carefully once and check for a quantifier or conditional trap, but not so long that you're re-reading the same rule repeatedly. If nothing resolves within your planned time, take your best-supported answer and move on to protect the rest of the set.
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